HJ75 tach, fuel and temp gauge not working.

[fras]

Hey guys as per title, my tachometer, fuel gauge and temp gauge aren't working. I have pulled the dash and I am fairly sure the grounds are ok, the rest of the dash works fine...

I am having trouble finding a wiring diagram, anyone able to help?

My truck is an '89 HJ75 with a 2H.

Any ideas guys?!

 

[Gun Runner 5]

The fuel gauge and water temp should have the same power source. You mentioned that the "ground" was good but what is the condition of the other wire ( or wires )?

 

[roscoFJ73]

I dont have fuse diagram,but have the fuses been checked?
Have you checked to see if there are any other components out of action?

Are the contacts on the guage cluster good?